Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe15972dc1bb71e3…

MALICIOUS

PDF

84.5 KB Created: 2021-07-07 14:00:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 1d7c4e2f96c1ea1531e203aa540d2d08 SHA-1: 97f0e0ff47a0b3a3103c469e93284c18ceac7e97 SHA-256: fe15972dc1bb71e35cd625ad74da2c5d7066fb9be33f5582ed71d429a3d52aac
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded URLs, including one pointing to a PDF file, suggests the document is designed to trick the user into downloading a secondary payload. The 'SE_DOWNLOAD_BUTTON' heuristic further supports this by indicating a visual lure for downloading content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://minerva-collection.net/files/files/95995489893.pdf
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/gp0s7ph7sfo1e5rg0k7qa8oga6/44803084606.pdf
    • http://globalbando.com/DATA/upload/files/202106280800035183.pdf
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc8ff3c174---54798538359.pdf
    • https://laatjehuisweerstralen.nl/upload/file/jopulimix.pdf
    • http://modelkyujin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091519760400---39215328292.pdf
    • https://synodradomski.pl/userfiles/file/josemufawerufiletu.pdf
    • http://seyrimerdin.com/userfiles/file/14881172698.pdf
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a3b0bb8d1d---nagafiki.pdf
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160bcca6adc43b---13737555134.pdf
    • http://playeasypiano.com/resources/fck_images/11127759198.pdf
    • http://meble-tk.pl/userfiles/file/72226205003.pdf
    • http://royalgoodviewresort.com/Uploads/file/bexudosanur.pdf
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb131187b1---25512227382.pdf
    • https://linhngapt.vn/upload/files/41572918106.pdf
    • https://artlabjo.com/userfiles/file/xabup.pdf
    • https://elmaga.lt/components/com_mijoshop/opencart/image/data/files/ledadugutus.pdf
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160780e488375b---11299664021.pdf
    • https://faktxeber.ru/resimler/files/33972195444.pdf
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bbf26ce2815---daboxuti.pdf
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/55f1b7423604b1cb7f8bc8661b270772/delesenufiti.pdf
    • https://daiichitravel.com/uploads/news_file/sepomed.pdf
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/160766e6155462---bexurad.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=class+12+physical+education+topper+answer+sheet
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5a6.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A6 16792 bytes
font_01_sfnt_off0000fdb8.bin
61061f1408f7d19c78359f708bf6fe16c9957f41abcd01b794d3e7ade8b20b82		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB8 17176 bytes
font_02_sfnt_off00012a74.bin
219507e9cb2fb0e2aa58b90ec0deba39fc0676d316e0ee8cef8e982cf90b76b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12A74 11112 bytes

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